so you are willing to escalate the confrontation to whatever it takes to prove you are correct. Wow, that really shows concern for the children.
If dad needs a witness, there are about 5 or 6 billion people on the planet. Of those 5 or 6 billion people on the planet, you are the absolute worst choice to consider as a witness. You have a vested interest in the outcome of any situation so that makes you an unreliable witness.
let dad take just about anybody else with him to the do/pu or seek a court order to have the do/pu in a public place but you going along for what you claim is ridiculous. You are only causing greater problems than you think you are curing.

